Sawmill-carriage



(No Model.) 3 Sheets-Sheet 1. U. ANDERSON. SAWMILL CARRIAGE No. 602,927. Patented Apr. 26, 1898.

3 Sheets-Sheet 2.

(No Model.)

U. AND ER S 0 N.

SAWMILL CARRIAGE.

No. 602,927. Patented Apr. 26, 1898.

Norms virus co, vuocvuwo., usm

(No Model.) 3 Sheets-Sheet 3.

U. ANDERSON.

SAWMILL CARRIAGE. No. 602,927. Patented Apr. 26, 1898..

U Nrrnn STATES Arent tries.

ULRICH ANDERSON, OF EAU CLAIRE, l/VISCONSlN.

SAWlVilLL-CARRIAG E.

SPECIFICATION forming part of Letters Patent No. 602,927, dated April 25, 1898;

Application filed August 4, 1897. Serial No. 647,072. (No model.)

To all whom t may concern.-

Be it known that I, ULRICH ANDERSON, a citizen of the United States, residing at Eau Claire, in the county of Eau Claire and State of lVisconsin, have invented a new and useful Sawmill-Carriage, of which the following is a specification.

This invention relates to improvements in sawmill-carriages. v

The object of the present invention is to improve the construction of sawmill-carriages, more especially the mechanism for offsetting and onsett-ing the same, and to provide a simple and comparatively inexpensive device adapted to be readily applied to the ordinary saw mill-carriage and capable of offsetting and onsetting the same at the end of its movement and while the wheels are stationary.

A further object of the invention is to cushion the sawmill-carriage frame in its oifsettin g and onsetting movement and to provide a simple and efficient brake for locking the wheels against rotation during the lateral movement of the sawmill-carriage frame.

The invention consists in the construction and novel combination and arrangement of parts, as herereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended.

In the drawings, Figure 1 is a reverse plan view of a sawmill-carriage provided with odsetting and onsetting devices constructed in accordance with this invention. Fig. 2 is an enlarged side elevation of one of the offsettingand onsetting devices. Fig. 3 is a longitudinal sectional View of the same. Fig. 4 is a transverse sectional View. Fig. 5 is a detail perspective view of the guide, which is mounted on the axle. Fig. 6 is a similar view of the slide. Fig. 7 is a detail view o'f the bracket, which is engaged by the slide. Figs. 8 and 9 are detail views of one of the sectional collars. Fig. 10 is a detail view of the brakeband. Fig. 11 is a similar view of the brakewheel. Figs. 12 to 14, inclusive, are detail views of parts of the brake. Fig.`15 is a deend axles 2 of a sawmill-carriage 3 and receiving a reciprocating slide 4, which engages a bracket 5 of the sawmill-carriage frame 6 and is adapted when it is moved longitudinally by means hereinafter described to shift the sawmill-carriage frame laterally and offset and onset the same. The guide 1, which is disposed longitudinally of the sawmill-carriage, is composedl of upper and lower portions 7 and S, provided at their adjacent faces with corresponding grooves forming an axlereceivingopenin g 9,and detachably connected by any suitable fastening device, whereby the guide is adapted to be readily mounted on and removed from the axle.

The upper portion 7, which is composed of two separable sections, is provided with lon gitudinal ways 10, which receive the reciprocating slide 4, and antifriction-rollers 11 and 12 are arranged at the sides and bottom of the guide on longitudinal plates 13 and 14 and are adjusted by set-screws 15 and 16 to take up any wear. The slide 4 is provided at opposite sides with longitudinal recesses 17, forming seats for the an tifriction-roller 11,and the sides of the guide 1 are centrally extended vertically at 1S, and these extensions are recessed at their ends to provide projections 19, which interlock with central transverse ways 2O of the bracket 5.

The bracket 5, which is disposed longitudinally of the sawmill-carriage frame and bolted to the same, is provided with a central depression or recess 21, and the end walls thereof are grooved to provide the ways 20 for the reception of the ends of the eXtensions 1S, whereby the guide and the bracket are interlocked. The slide, which is interposed between the guide and the bracket, is provided at its center with lon gitudinally-disposed webs or anges 22, having parallel inner faces and forming offsetting ways 23, which engage a depending stem 24 of the bracket. The flanges 22, which form the offsetting ways, are arranged in the recess or seat 2l of the bracket and the end portions of their inner faces are disposed longitudinally of the sawmill-carriage frame, while the central portions are disposed at an angle or diagonally, whereby a longitudinal reciprocation of the slide will shift the bracket 5 and the sawmill-carriage frame laterally to IOO offset and onset the same. The ends of the offsetting and onsetting ways 23, by being arranged longitudinally of the sawmill-carriage, as shown, operate to lock the bracket against lateral movement when the slide is at the end of its reciprocation, thereby preventing any accidental movement of the sawmill-carriage frame. l

The ends of the bracket 5 are provided with L-shaped arms 25, forming a recess for the reception of the slide and limiting the reciprocation of the saine, and the horizontal por tions of the arms 25 are perforated to receive the fastening devices for securiu g the bracket to the sawmill-carriage frame.

The projections 19, which interlock with the transverse ways of the bracket, are recessed to provide seats for antifriction-rollers 2G,and the depending stem 24 is surrounded by a sleeve 27, and an annular series of antifriction-rollers 28 are housed within the sleeve 27 and interposed between the same and the stem 24 to provide a frictionless engagement between the bracket and the slide in offsettingand onsettingthe sawmill-carriage frame.

The slide is reciprocated by a piston-rod 29, which has one end connected with a suitable cylinder and is designed to carry a piston-head in order that it may be moved in either' direction, as will readily be understood, and the other end of the piston is connected with one of the offsetting and onsetting devices of the sawmill-carriage frame by a curved bracket-piece 30, spanning the lower portion 8 of the guide and secured at its terminals to the ends of the slide 4, from which it depends, as clearly illustrated in Fig. 2 of the accompanying drawings. The depending bracketpiece 30 is provided at its center with a longitudinal sleeve portion 3l, which receives the piston-rod 29, and its inner end is provided with a tubular portion 32, receiving one end of a connecting-rod 33, which extends from one offsetting and onsetting device to the other and has its other end secured to a lug 34, as illustrated in Fig. l of the accompanying drawings. By this construction both offsetting and onsettin g devices Will be simultaneously operated when the piston-rod is reciprocated.

The slide is provided at each end with a longitudinal socket 35, in which is arranged a plunger 36, which projects beyond the slide and is adapted to engage the bracket 5. A spiral spring 37 is arranged within the opening or socket 35 and bears against the end Wall thereof, a washer 38 and a disk of rubber 39 being interposed between the spring and the inner end of the plunger to form a cushion. Vthen the plunger comes in contact with the bracket and compresses the rubber against the spring, said rubber disk is expanded, forming an air-tight joint and adapted to compress the air within the opening or hole 3.7 and form an air-cushion.'` By this construction the sawmill-carriage is effectively cushioned in its offsetting and onsetting movements.

The offsetting and onsetting devices are locked out of operation when desired by a pair of pivoted dogs 40, mounted on the bracket 5 in recesses thereof and adapted to project through openings 41 of the same and engage the slide at opposite sides thereof, whereby the bracket is locked against lateral movement on the guide. As the pivoted dogs are arranged at the top of the offsetting and onsettin g device, they are retained in engagement with the same by gravity, and they are similarly maintained out of operation.

The lower portion 8 of the guide is substantially semicircular, as shown, and the said guide, which is mounted on the axle, is held against lateral movement on the same by sectional collars 42, keyed to the axle and secured by set-screws. The sectional collars, which are located at opposite sides of each offsetting and onsetting device, are provided with exterior ribs, the contiguous ones of the sections being perforated and bolted together, as shown in Fig. 8.

In orderto absolutely prevent any longitudinal movement of the sawmill-carriage during the offsetting and onsetting movement of the sawmill-carriage frame, a brake is provided and is composed of a friction or brake Wheel 43 and a band 44, mounted at its bottom on one side of the lower portion 8 of the guide by bolts 45.` A weighted lever 46 is fulcrumed on one end of the band 44, and is adj ust-ably connected by a link 47 with the other end of the band, and the link 47, which has one end pivoted to the weighted lever, carries an adj Listing-screw 48 at its other end for engaging the adjacent end of the band. The lever 46 is provided With a sliding weight 49, which is secured at any adjustment by a setscrew, and any desired pressure may be obtained by adjusting the weight and the setscrew 48. The link 47 is provided with a threaded lug, extending at right angles to its body portion and receiving the adjustingscrew 48, which is retained at any desired adjustment by a jam-nut 50.

W'hen the slide 4 is at the end of its reciprocation, theband is held oif the brake-Wheel 42 by a pair of pawls 5l and 52, which are controlled by a rock-shaft 53. The pawls 5l and 52 are arranged at an angle to each other, as clearly illustrated in Fig. 2 of the accompanying drawings, and are received in suitable recesses of the ends of the band, and the pawl 52, which is provided with an extension 54, has a sfat at the inner terminal thereof for the pawl 5l. The rock-shaft 53,

which has its engaging end reduced, is journaled in a perforation 55 of one side of the guide, and is provided at its inner end with an L-shaped arm 53, forming a crank and connected with the slide, whereby when the slide is reciprocated the rock-shaft 53 will be operated. The L-shaped arm or crank,

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which is arranged in a triangular recess 56 of the slide, has its outer end engaging a socket 57 of the same, and the triangular recess 56 limits the swing of the rock-shaft. The flattened engaging end of the rock-shaft 53 bears against the pawls and is adapted to force the same in the direction of the brake-wheel to relieve the same of the band and to permit the latter to engage the brake-wheel. A

The brake mechanism may be dispensed with, if desired, as it requires much more force to work the sawmill-carriage than to oftset and onset the same. The brake, when used, is interposed between one of the sectional collars and the adjacent offsetting and onsetting device, as clearly illustrated in Fig. 1 of the accompanying drawings.

It will be clear that the sawmill-carriage frame may be slidingly mounted on the axles in any suitable manner, that the offsetting and onsetting devices will shift the frame laterally While the carriage is at a standstill, and that an effective cushion is provided. It will also be apparent that the offsetting and onsetting devices may be locked out of operation and that an effective brake is provided for automatically locking the sawmill-carriage against longitudinal movement during the offsetting and onsetting operation.

Chan ges in the form, proportion, and minor details of construction may be resorted to without departing from the spirit or sacriiicing any of the advantages of thisin vention.

What I cla-im is- 1. In a device of the class described, the combination of a bracket designed to be mounted on a sawmill-carriage frame and provided with adepending stem, alongitudinal guide designed to be mounted on an axle and having longitudinal ways, and a longitudinally-reciprocating slide mounted in the ways ot' the guide and provided with longitudinal flanges 22, spaced apart and receiving the said stem and having parallel inner faces, the end portions of the inner faces being disposed longitudinally of the sawmillcarriage, and the central portions being arranged diagonally of the same and adapted to force the stem laterally and oftset and onset the sawmill-carriage frame, substantially as described.

2. In a device of the class described, the combination of a bracket provided with a recess and having transverse ways at opposite sides thereof, a guide having longitudinal ways and interlocked with the transverse ways of the bracket, whereby the latter is slidingly connected with the former, a stem mounted on the bracket, and a reciprocating slide mounted in the ways of the guide and provided with flanges forming offsetting and onsettin g ways and tting in the recess of the bracket, said offsetting and onsetting ways receiving the said stem, substantially as described.

3. In a device of the class described, the combination of a guide having longitudinal ways and designed to be mounted on an axle, a bracket designed to be secured to a sawmillcarriage frame, provided with transverse ways and interlocked with the guide, and a longitudinal reciprocating slide mounted in the ways of the guide and engaging the bracket to offset and onset the same, substantially as described.

4. In a device of the class described, the combination of a bracket having a central recess and provided with grooves at the end walls thereof, a guide having longitudinal ways and provided at opposite sides with recessed extensions forming projections fitting in the said grooves, antifriction-rollers arranged in seats of the projections and interposed between the latter and the bracket, a slide mounted iu the Ways of the guide and engaging the bracket to odset and onset the same, and antifriction-rolls interposed between the slide and the guide, substantially as described.

5. In a device ot' the class described, the combination of a bracket having a stem, a guide composed of upper and lower portions detachably connected and adapted to fit around an axle, the upper portion of the guide being sectional and provided with longitudinal ways, said guide being interlocked 'with the bracket, and a slide arranged in the ways of the guide and provided with offsetting and onsetting ways to receive the stein, substantially as described.

6. In a device of the class described, the combination of a bracket having a central recess or depression and provided at its ends with L-shaped arms, a guide provided with longitudinal Ways and interlocked with the bracket, and a reciprocating slide mounted in the guide and having its movement limited by the L-shaped arms, said slide being provided with offsetting and onsetting ways and engaging the bracket, substantially as described.

7. In a device of the class described, the combination of a bracket, a guide having longitudinal ways, adjustable bars arranged at the sides and bottom of the ways, a slide mounted in the Ways of the guide and provided with offsetting and onsetting ways to engage the bracket, antifriction-rolls interposed between the bars and the slide, and adj usting-screws mounted on the guide and engaging the bars to take up the wear, substantially as described.

8. In a device of the class described, the combination of a bracket designed to be secured to a sawmill-carriage, a guide interlocked with the bracket and designed to be mounted on an axle, a reciprocating slide mounted in the guide, extending beyond the same and provided with osetting and onsetting ways to engage the bracket, and an arched bracket-piece detachably connected IOO IOS

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to the ends of the slide, substantially as described.

9. In a device of. the class described, the

combination with a sawmill-carriage frame, an axle supporting the same, of offsetting devices located at the ends of the frame and each comprising a bracket secured to the frame and having transverse ways, a guide mounted on the adjacent axle, interlocked with the bracket and having longitudinal ways, and a reciprocating slide mounted in the guide, provided with offsetting and onset-ting ways and engaging the bracket, the depending curved bracket-piece connected with one of the slides and provided at its bottom with a sleeve, a piston-rod having one end arranged in the sleeve, and a connecting-rod having one end secured to the curved bracket-piece and its other end attached to the slide of the other offsetting and onsetting device, substantially as described.

10. In a device of the class described, the combination of a bracket having transverse ways, a longitudinal guide interlocked with the bracket, a reciprocating slide mounted in the ways of the guide and having offsetting and onsetting ways engaging the bracket, and pivoted dogs mounted on the bracket and arranged to engage the slide, substantially as described.

1l. In a device of the class described, the combination with a sawmill-carriage, of offsetting mechanism having a movable member provided with an opening, and a cushion adapted to abut against a fixed portion `of the sawmill-carriage frame and comprising a spring arranged in said opening, a plunger tting in the same and projecting therefrom, and an elastic disk interposed between the plunger and the spring and adapted to expand when the plunger is forced inward, whereby an air-cushion is formed, substantially as described.

12. In a device of the class described, the combination With offsetting mechanism of a brake-wheel, a brake-band arranged on the brake-wheel, and means connected with and operated by the offsetting mechanism for causing the band to engage the wheel during the offsetting and onsetting operations, substantially as described.

13. In a device of the class described, the combination with offsetting mechanism, .of a brake-wheel, a band arranged on the Wheel, a weighted Vlever connected With the band and adapted to cause the same to engage the wheel with the .desired pressure, pawls interposed between the ends of the band, and connections between the pawls and the offsetting mechanism whereby when the latter is operated the band will be applied tothe brakewheel, substantially as described.

14. In a deviceof the class described, the combination with a sawmill-carriage frame, and offsetting mechanism, of a brake-wheel, a band arranged on the wheel, aweighted lever fulcrumed on one end of the band, a link connected with the other end of the band and with the weighted lever, pawls interposed between the ends of the band and adapted to hold the latter normally off the wheel, and connections between the pawls and the offsetting mechanism, whereby the band will be released when the said mechanism is operated, substantially as described.

15. In a device of the class described, the combination with a sawmill-carriage frame, and offsetting mechanism, of a brake-wheel, a band arranged on the brake-wheel, a weighted lever fulcrumed on oneend of the band, a link pivoted to the lever and provided with an adjusting-screw engaging the other end of the band, and connections betweenthe band and the offsetting mechanism, substantially as described.

16. In a device of the class described, the combination of a sawmill-carriage frame, and a reciprocating offsetting-slide having a triangular recess and a socket, of a brake-wheel, a band arranged on the wh eel, means for causing the band to engage the wheel, a pair of angularly-disposed pawls interposed between the ends of the band and engaging the same, and a rock-shaft journaled in suitable bearings, engaging thepawls and having a crankarm 'tting in the triangular recess of the slide and the socket of the same, substantially as described.

17. In a device ofthe class described, the combination with a sawmillscarriage frame, a reciprocating osetting-slide, and a guide, of a brake-wheel, a band arranged on the brakewheel, a weighted lever connected with the band, a pair of angularly-disposed pawls interposed between and engaging the ends of the band, and a rock-shaft connected with the slide, journaled on the guide and arranged to engage the pawls, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

ULRICH ANDERSON.

Vitnesses:

HENRY MOBAIN, ANDREW STnNsAAs. 

